Home > In Car Electronics > Key Fob Circuit Board - Re-soldering Tiny SMD Capacitor? |
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MadTom Member Since: 10 Sep 2013 Location: Olomouc Posts: 614 |
No need for solder paste and reflow, much better and safer for the rest of components is just solder the two.pads with same fine tip solder. Key is to use some flux - look for RMA-223. Solder paste is not enough for contact soldering. Some toothpick is enough to apply the flux to board. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo
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30th Jun 2024 5:38pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20265 |
There is liquid flux as well, the issue I think is the very fine solder tip needed.
Possibly tweezers to hold the capacitor and very quickly on low a mini gas torch just enough to heat and off, though I’m not sure how safe an option that would be. The above is the safest. It’s tricky due to its size, you could possibly with tweezers put the tiniest dot of superglue under it to keep it in place but keep it away from contacts, or a tiny bit of hot glue just to keep it where you want. The latter here can come off easier. I’d tend to try and keep the capacitor in place, then solder it, far easier, it’s that (the cap) moving around that will be your problem otherwise. |
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30th Jun 2024 8:45pm |
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Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6601 |
I think you’re pretty close to me despite being 2 counties over
So if you wanted it doing instead of buying kit and consumables for one tiny job let me know 1988 90 Td5 NAS soft top 2015 D90 XS SW |
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1st Jul 2024 5:43am |
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jcw Member Since: 11 Sep 2016 Location: Gloucestershire Posts: 168 |
Thanks all, just the type of guidance I was looking for.
Martin, yep Hook Norton’s a stones throw from me, that’s a very kind offer and that would avoid me potentially making a pigs ear of it and rendering the circuit board scrap I’ll drop you a PM to sort out arrangements Jonathan |
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1st Jul 2024 11:09am |
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